Why expression 7×3 to the x is not equal to the expression 21 to the x?

Do you mean: 7*3^x or (7*3)^x? For the first one, 7*3^x is not equal to 21^x because 7* (3^x) is not the same as 21^x. Now, this may sound confusing, so let's give x a value. If x = 2, then the expression would be 7* (3^2), which is 7*9, and that's not the same as 21^2 (42).

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

the answer is c hope it

step-by-step explanation: